Improving performance of Kafka Producer

Question

We\'re running on apache kafka 0.10.0.x and spring 3.x and cannot use spring kafka as it is supported with spring framework version 4.x.

Therefore, we are using the

Answer 1

Your understanding is partially right.

As @leshkin pointed out there are configuration parameters to tune how the KafkaProducer will handle buffering of messages to be sent.

However independently from the buffering strategy, the producer will take care of caching established connections to topic-leader brokers.

Indeed you can tune for how long the producer will keep such connection around using the connections.max.idle.ms parameter (defaults to 9 minutes).

So to respond to your original question, the I/O cost of establishing a connection to the broker happens only on the first send invocation and will be amortised over time as long as you have data to send.